Evoenergy is testing and assessing the condition of two high-voltage underground cable feeders in Gungahlin as part of our ongoing work to strengthen network reliability and maintain a safe and reliable electricity supply for the community.
In recent years, parts of Gungahlin have experienced an increase in unplanned outages. Evoenergy has responded with a significant program of work to strengthen reliability, including network upgrades, additional inspections and improvements to how we respond to faults.
This testing builds on Evoenergy's ongoing commitment to invest in and actively manage the network to maintain a safe and reliable electricity supply for the Gungahlin community. Visit our network projects page to learn more about how we are improving network reliability in Gungahlin.
Specialised testing to strengthen reliability in Gungahlin
High-voltage underground cable feeders are critical infrastructure in the electricity distribution network. These feeders carry electricity from the Gold Creek Zone Substation to local substations, which then supply homes and businesses across Gungahlin.
As part of our approach to maintaining a safe and reliable network, we are undertaking specialised diagnostic testing to proactively identify potential issues with these cables. The testing is designed to detect emerging problems early, allowing them to be investigated and rectified before they develop into faults that could cause unplanned interruptions to electricity supply.
What you should know
Testing is planned over a three-week period in November 2026 and will require staged planned outages affecting around 945 customers. Some customers will experience two planned outages. Evoenergy will provide advance information to affected customers explaining why the work is needed, what to expect and how to prepare.
To minimise disruption, testing will be carried out in stages with arrangements in place to maintain power supply where possible. Customers in parts of Ngunnawal, Moncrieff, Casey and Taylor will experience a planned outage, with some experiencing two. These outages are necessary to keep our team safe during testing. Planned outages are expected to last between three and nine hours.
Customers should be aware that:
- Affected customers will receive advance notice of planned outages, including an official notification letter in the mail and an SMS.
- Customers affected by both planned outages will receive official notifications by mail and SMS before each outage, providing advance notice of when the outage will occur.
- Planned outages are expected to last approximately between three and nine hours.
- If testing identifies critical faults, we may need to carry out urgent repairs. This could cause a further or extended outage while we safely address the issue.
- If an outage needs to be extended, we'll notify affected customers via SMS as soon as we become aware of the extension. If urgent work is required, we'll keep affected customers informed and provide as much notice and information as circumstances allow.
What happens next
The results will provide us with valuable information about the condition of these assets and help us identify potential defects before they cause a fault, prioritise repairs and plan future network investment.
Priority issues identified through the testing are expected to be repaired by May 2027. Any remaining non-critical defects will be incorporated into ongoing works programs and addressed by December 2027. While this work requires planned outages, it is designed to help us identify and address issues before they contribute to future reliability problems and support long-term reliability improvements for the Gungahlin community.